1 /* $Id: arcofi.c,v 1.14.2.3 2004/01/13 14:31:24 keil Exp $
2 *
3 * Ansteuerung ARCOFI 2165
4 *
5 * Author Karsten Keil
6 * Copyright by Karsten Keil <keil@isdn4linux.de>
7 *
8 * This software may be used and distributed according to the terms
9 * of the GNU General Public License, incorporated herein by reference.
10 *
11 */
12
13 #include <linux/sched.h>
14 #include "hisax.h"
15 #include "isdnl1.h"
16 #include "isac.h"
17 #include "arcofi.h"
18
19 #define ARCOFI_TIMER_VALUE 20
20
21 static void
add_arcofi_timer(struct IsdnCardState * cs)22 add_arcofi_timer(struct IsdnCardState *cs) {
23 if (test_and_set_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) {
24 del_timer(&cs->dc.isac.arcofitimer);
25 }
26 init_timer(&cs->dc.isac.arcofitimer);
27 cs->dc.isac.arcofitimer.expires = jiffies + ((ARCOFI_TIMER_VALUE * HZ) / 1000);
28 add_timer(&cs->dc.isac.arcofitimer);
29 }
30
31 static void
send_arcofi(struct IsdnCardState * cs)32 send_arcofi(struct IsdnCardState *cs) {
33 add_arcofi_timer(cs);
34 cs->dc.isac.mon_txp = 0;
35 cs->dc.isac.mon_txc = cs->dc.isac.arcofi_list->len;
36 memcpy(cs->dc.isac.mon_tx, cs->dc.isac.arcofi_list->msg, cs->dc.isac.mon_txc);
37 switch (cs->dc.isac.arcofi_bc) {
38 case 0: break;
39 case 1: cs->dc.isac.mon_tx[1] |= 0x40;
40 break;
41 default: break;
42 }
43 cs->dc.isac.mocr &= 0x0f;
44 cs->dc.isac.mocr |= 0xa0;
45 cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
46 (void) cs->readisac(cs, ISAC_MOSR);
47 cs->writeisac(cs, ISAC_MOX1, cs->dc.isac.mon_tx[cs->dc.isac.mon_txp++]);
48 cs->dc.isac.mocr |= 0x10;
49 cs->writeisac(cs, ISAC_MOCR, cs->dc.isac.mocr);
50 }
51
52 int
arcofi_fsm(struct IsdnCardState * cs,int event,void * data)53 arcofi_fsm(struct IsdnCardState *cs, int event, void *data) {
54 if (cs->debug & L1_DEB_MONITOR) {
55 debugl1(cs, "arcofi state %d event %d", cs->dc.isac.arcofi_state, event);
56 }
57 if (event == ARCOFI_TIMEOUT) {
58 cs->dc.isac.arcofi_state = ARCOFI_NOP;
59 test_and_set_bit(FLG_ARCOFI_ERROR, &cs->HW_Flags);
60 wake_up(&cs->dc.isac.arcofi_wait);
61 return (1);
62 }
63 switch (cs->dc.isac.arcofi_state) {
64 case ARCOFI_NOP:
65 if (event == ARCOFI_START) {
66 cs->dc.isac.arcofi_list = data;
67 cs->dc.isac.arcofi_state = ARCOFI_TRANSMIT;
68 send_arcofi(cs);
69 }
70 break;
71 case ARCOFI_TRANSMIT:
72 if (event == ARCOFI_TX_END) {
73 if (cs->dc.isac.arcofi_list->receive) {
74 add_arcofi_timer(cs);
75 cs->dc.isac.arcofi_state = ARCOFI_RECEIVE;
76 } else {
77 if (cs->dc.isac.arcofi_list->next) {
78 cs->dc.isac.arcofi_list =
79 cs->dc.isac.arcofi_list->next;
80 send_arcofi(cs);
81 } else {
82 if (test_and_clear_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) {
83 del_timer(&cs->dc.isac.arcofitimer);
84 }
85 cs->dc.isac.arcofi_state = ARCOFI_NOP;
86 wake_up(&cs->dc.isac.arcofi_wait);
87 }
88 }
89 }
90 break;
91 case ARCOFI_RECEIVE:
92 if (event == ARCOFI_RX_END) {
93 if (cs->dc.isac.arcofi_list->next) {
94 cs->dc.isac.arcofi_list =
95 cs->dc.isac.arcofi_list->next;
96 cs->dc.isac.arcofi_state = ARCOFI_TRANSMIT;
97 send_arcofi(cs);
98 } else {
99 if (test_and_clear_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) {
100 del_timer(&cs->dc.isac.arcofitimer);
101 }
102 cs->dc.isac.arcofi_state = ARCOFI_NOP;
103 wake_up(&cs->dc.isac.arcofi_wait);
104 }
105 }
106 break;
107 default:
108 debugl1(cs, "Arcofi unknown state %x", cs->dc.isac.arcofi_state);
109 return (2);
110 }
111 return (0);
112 }
113
114 static void
arcofi_timer(struct IsdnCardState * cs)115 arcofi_timer(struct IsdnCardState *cs) {
116 arcofi_fsm(cs, ARCOFI_TIMEOUT, NULL);
117 }
118
119 void
clear_arcofi(struct IsdnCardState * cs)120 clear_arcofi(struct IsdnCardState *cs) {
121 if (test_and_clear_bit(FLG_ARCOFI_TIMER, &cs->HW_Flags)) {
122 del_timer(&cs->dc.isac.arcofitimer);
123 }
124 }
125
126 void
init_arcofi(struct IsdnCardState * cs)127 init_arcofi(struct IsdnCardState *cs) {
128 cs->dc.isac.arcofitimer.function = (void *) arcofi_timer;
129 cs->dc.isac.arcofitimer.data = (long) cs;
130 init_timer(&cs->dc.isac.arcofitimer);
131 init_waitqueue_head(&cs->dc.isac.arcofi_wait);
132 test_and_set_bit(HW_ARCOFI, &cs->HW_Flags);
133 }
134